Suppressor thread question

[Hermitage]

It’s looking more and more like that is the situation.
I take it you understand the finer points of cutting threads, my own personal experience starts and ends with using tapping dies, what I am interested to know is whether it is a fairly straight forward process to tidy up a thread or is there some significant risk the thread could end up wrecked in the process and need to be cut off and started again.

If the tidying up of the thread doesn't work and the barrel needs to be shortened due to a rethread, then would you be willing to cut the stock forend back and then remold with something like Selleys Knead It? (cheaper than a new barrel and can look alright with a paint).